CVE-2007-4138: Samba

Medium severity, CVSS 6.9. EPSS: 0.7% chance of exploitation in the next 30 days.

The Winbind nss_info extension (nsswitch/idmap_ad.c) in idmap_ad.so in Samba 3.0.25 through 3.0.25c, when the "winbind nss info" option is set to rfc2307 or sfu, grants all local users the privileges of gid 0 when the (1) RFC2307 or (2) Services for UNIX (SFU) primary group attribute is not defined.

Affected products

• Samba Samba: version 3.0.25 only; version 3.0.25a only; version 3.0.25b only; version 3.0.25c only

Published 2007-09-14. Last modified 2026-06-16.